There is a growing literature around using cell-phone and app-based data for research around location and migration, which includes short-term displacement due to disasters. For example, [1]} involved the use of 1.9 million phone users' location data subsequent to and for up to one year after the 2010 Haitian earthquake. This work was able to uncover very detailed mobility patterns among the studied population. [2]} follows up on this work and demonstrates the cost effectiveness of using mobile phone network data for accurate and detailed maps of populations after a disaster. This is an active area of the literature, which is also being used to estimate the population of countries that have historically had weak or non-existent demographic data [3]}.
